2011

This enables performance to be prioritized over structure/properties and has the added benefit of improving
streaming by cutting down the logical structure.
NOTE Although Autodesk Navisworks tries to collapse items to the fewest number possible, it may be necessary to
prevent collapsing in some cases to preserve model fidelity. For example, if an item has properties or materials unique
to itself, then collapsing would endanger this information, and therefore it will not be collapsed.
Close NWC/NWD files on Load Indicates whether NWC and NWD files are closed once they’ve been loaded
into memory.
When you open NWC/NWD files, Autodesk Navisworks locks them for editing. By selecting this check box, you
instruct Autodesk Navisworks to close NWC or NWD files as soon as they’ve been loaded into memory. This
means that the files can be opened and edited by other users while you are viewing them.
Create Parametric Primitives Select this check box to enable creation of parametric models (models described
by formulae not vertices).
Using this option allows you to get better looking visuals, faster rendering, smaller memory footprint (especially,
when loading DGN and RVM files with significant amounts of parametric data that no longer need to be converted
into vertices in Autodesk Navisworks).
NOTE Modifying this option takes effect when you next load or refresh file.
Create Presenter Materials Select this check box to enable creation of Presenter materials when NWC files are
loaded.
Clearing this check box turns off creation of Presenter materials.
Temporary File Location
Auto Indicates whether Autodesk Navisworks automatically selects your user Temp folder.
Location Click
to open the Browse for Folder dialog box, and select the desired Temp folder.
NWD Page
Use the options on this page to enable and disable geometry compression and select whether the precision of
certain options is reduced when saving or publishing NWD files.
Geometry Compression
Enable Select this check box to enable geometry compression when NWD files are saved.
Geometry compression results in less memory being required and therefore smaller NWD files.
Reduce Precision
Coordinates Select this check box to reduce the precision of coordinates.
Precision Specifies the precision value for coordinates. The larger the value, the less precise coordinates are.
Normals Select this check box to reduce the precision of normals.
Colors Select this check box to reduce the precision of colors.
Texture Coordinates Select this check box to reduce the precision of texture coordinates.
See also:
■ “Native File Formats” on page 111
NWC Page
Use the options on this page to manage reading and writing of cache files (NWC).
By default, when Autodesk Navisworks opens a native CAD file (for example, AutoCAD or MicroStation), it first
checks in the same directory whether there is a cache file present with the same name as the CAD file but with
an .nwc extension. If there is, and this cache file is newer than the native CAD file, then Autodesk Navisworks
452 | Chapter 16 Autodesk Navisworks Reference